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arXiv · 1708.05181

Entanglement witnesses from mutually unbiased bases

Dariusz Chruściński·Gniewomir Sarbicki·Filip Wudarski
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Abstract

We provide a class of entanglement witnesses constructed in terms of Mutually Unbiased Bases (MUBs). This construction reproduces many well-known examples like the celebrated reduction map and Choi map together with its generalizations. We illustrated our construction by the detailed analysis of the 3-dimensional case: in this case, one obtains a family of entanglement witnesses parameterized by an L-dimensional torus (L = 2,3,4 being a number of MUBs used in the construction).

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Dariusz Chruściński, Gniewomir Sarbicki, Filip Wudarski. 2017-08-17. Entanglement witnesses from mutually unbiased bases. https://doi.org/10.1103/physreva.97.032318

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